Bellow
Hardcore MB Enthusiast
Sticking/jerking advance retard mechanisms might just show up with a strobe. Conversely, if all is well, advance/retard should be smooth and repeatable. For the relative ease of checking - I'd want to know.
W124 230te stalling/hesitating under load.
- Thread starter Alx230te
- Start date
ray_hennig
MB Enthusiast
Does it have such a thing. I thought an EZL would be controlling timing.
A photo of the ignition distributor, perhaps?
R
Bellow
Hardcore MB Enthusiast
Yes, I think it does.
Back then, electronic ignition replaced contact points but that was all. The advance/retard mechanisms were still in the distributor.
See photo below of 2.0 litre engine in a 190. The vac capsule is just visible in the lower left along with its connecting vac pipe.
Yes same set up for the 2.3 m102 engine. Controlled by the EZL .
I took it out today for a good half hour and it’s running fine , the idle had even dropped back to where it’s always been on the rev counter.
And it’s a wet damp day , was half expecting it to have an effect but no.
A real head scratcher, definitely something with the airflow/fuel distributor after it was disconnected cleaned and put back on.
Potentially something in the fuel pipes or just needed a good clean .
I’m not holding my breath tho and half expecting it to come back over the next few drives . I hope not and will be back if it does .
I took it out today for a good half hour and it’s running fine , the idle had even dropped back to where it’s always been on the rev counter.
And it’s a wet damp day , was half expecting it to have an effect but no.
A real head scratcher, definitely something with the airflow/fuel distributor after it was disconnected cleaned and put back on.
Potentially something in the fuel pipes or just needed a good clean .
I’m not holding my breath tho and half expecting it to come back over the next few drives . I hope not and will be back if it does .
Bellow
Hardcore MB Enthusiast
I'm not convinced of that.
From Wiki:
M102.962[edit]
An update to the M102.961 introduced in 1985. This is identified by the EZL ignition system and a single accessory drive belt. Cubic capacity: 1,997 cc (2.0 L). Power output: 87–90 kW (118-122 PS; 117-120 bhp)Applications:
- 1985–1993 W201 190E
A photo of your distributor would settle the argument.
You have been doing a lot of leak elimination. Which changes manifold vacuum levels that the vacuum advance mechanism sees.
If it were fuel starved due a to a (even intermittent) blockage it's near certain it would show at higher speed running where the fuel flow is much higher.
One minute with a strobe light eliminates or confirms a problem in the distributor.
ray_hennig
MB Enthusiast
Hmm. Maybe I spoke to soon. I know the M103 & M104 with the distributor mounted direct to the camshaft. No timing in there, certainly not in my M104.
I thought that the technology would be the same as they're from the same era but perhaps not.
Sorry to mislead.
R
Bellow
Hardcore MB Enthusiast
One of us is correct. Alas, only the OP knows which of us!
Well I’m back and so is the issue , but 2 factors that have arisen are that the day it all kicked off again it was absolutely pissing it down, had to go through some horrendous puddles last week and the kicking and stalling started up .
So I spent the last week checking lines, air flow meter and fuel distribution again .
But same old, runs fine on start up and then crap at temp on idle and pull away .
But today , I had the car running at idle most of the day - idle was high but not stalling and realised the throttle micro switch wasn’t engaging, then realised something wasn’t quite right , there was no spring , and it’s not had one for quite some time , I don’t know how long but definitely late last year. Don’t know why that’s gone , but it has .
So found a spring that works and after a 5 min drive it settled, no stuttering and stalling .
So I’m hoping it’s just that spring, but because the car has been running all day I’m thinking something has dried out and it’s running ok .
I will be taking it through some serious rain and puddles again to see if the problem comes back . It was the same conditions when the problem first occurred and probably explains why it’s been so bad over our damp wet winter .
If it is the wet/damp conditions then I’m guessing the distributor/coil or ground connections need a good looking at .
Will report back once I’ve put the car through the rain again.
So I spent the last week checking lines, air flow meter and fuel distribution again .
But same old, runs fine on start up and then crap at temp on idle and pull away .
But today , I had the car running at idle most of the day - idle was high but not stalling and realised the throttle micro switch wasn’t engaging, then realised something wasn’t quite right , there was no spring , and it’s not had one for quite some time , I don’t know how long but definitely late last year. Don’t know why that’s gone , but it has .
So found a spring that works and after a 5 min drive it settled, no stuttering and stalling .
So I’m hoping it’s just that spring, but because the car has been running all day I’m thinking something has dried out and it’s running ok .
I will be taking it through some serious rain and puddles again to see if the problem comes back . It was the same conditions when the problem first occurred and probably explains why it’s been so bad over our damp wet winter .
If it is the wet/damp conditions then I’m guessing the distributor/coil or ground connections need a good looking at .
Will report back once I’ve put the car through the rain again.
